Unable to install P.I. EMS HW30C bypass

[Boomerweps]

Tried to finally install a factory remote bypass on my EMS. Procedure is simple, except…
Instructions state to put the remote’s black wire on the empty spade lug under the white neutral input wire. THERE IS NO EMPTY LUG. There are two occupied lugs with wires going to other components.
Of course, doing this on Sunday, there is no tech support at P.I. Have to call them during the workday tomorrow ;(

[wa8yxm]

Bobbo wrote:

Actually, I have seen phone cords wired both ways. For the phone, it doesn't matter. The wires are utilized as pairs. The outer pair (1 and 4 in your example) are one phone line. The inner pair (2 and 3 in your example) are a second phone line. Since the phone wiring doesn't care about polarity, it doesn't matter.

Actually it depends on the phone A rotary dial old fashion phone you are correct.. many Touch Phones if you reverse the "Ring and Tip" wires they won't dial out.. You can still talk but you can not dial out.

and some have other polarity issues like dial lights.

Lineman reversed ring and tip on me (The two active wires. are called "Ring and Tip" due to the 3-Wire 1/4 Inch plug used on old switch boards.. They connected to the Ring and Tip terminals on the plug)

[Bobbo]

Thank you. That is the EMS-LCHW30 unit. As you can tell from the discussions above, knowing the correct model can make a difference.

[Boomerweps]

Bobbo wrote:
While the OP has not addressed this, I would bet he has the EMS-LCHW30 instead of the EMS-HW30C.

I used the numbers on my downloaded manual. I have the hardwired 30 amp P.I. EMS without remote display, whatever the letters and numbers.

[Bobbo]

While the OP has not addressed this, I would bet he has the EMS-LCHW30 instead of the EMS-HW30C.

[Boomerweps]

Turns out there are two more male lugs under the supply neutral behind the other two occupied ones. On my hands and knees with a crinked neck to find them. Had to remove the supply line to gain access and split the cable sheathing further on the switch for the new wires to reach their connectors. Yes it is a small 2 wire cable that is sized/colored to look like phone line. Install complete. My EMS is on the wheel well under the aft dinette bench, a fun working location. The P.I. tech was very helpful and has units on hand to walk you through the install/repair.

[Bobbo]

wa8yxm wrote:
There is a difference betwen a data cable and a phone cable.. BUT if the data cable is too short.. you use a standard modular phone cable to extend..

What is the the fiffernece

On a phone cable if you look at it the wires on one end would be numbered With the tabs up

1 2 3 4 and on the other end also tabs up 4 3 2 1

On the data cable Both ends would be 1.2.3.4

(The ends are "Flipped" on the phone cord.

On the phone EXTENSION cable.. the double female connector you use to join them "Flips" the leads so what was lead 1,,,, Remains lead 1

Actually, I have seen phone cords wired both ways. For the phone, it doesn't matter. The wires are utilized as pairs. The outer pair (1 and 4 in your example) are one phone line. The inner pair (2 and 3 in your example) are a second phone line. Since the phone wiring doesn't care about polarity, it doesn't matter.

[CA_Traveler]

I purchased a 30' data cable for about $10.

[wa8yxm]

CA Traveler wrote:

Bobbo wrote:
I'm confused. I thought the remote display/disconnect was a data cable similar to a phone cord or ethernet cord that just plugged into a connector on the EMS case.

It is a data cable similar to a phone cord.

There is a difference betwen a data cable and a phone cable.. BUT if the data cable is too short.. you use a standard modular phone cable to extend..

What is the the fiffernece

On a phone cable if you look at it the wires on one end would be numbered With the tabs up

1 2 3 4 and on the other end also tabs up 4 3 2 1

On the data cable Both ends would be 1.2.3.4

(The ends are "Flipped" on the phone cord.

On the phone EXTENSION cable.. the double female connector you use to join them "Flips" the leads so what was lead 1,,,, Remains lead 1

[CA_Traveler]

ScottG wrote:

CA Traveler wrote:

Bobbo wrote:
I'm confused. I thought the remote display/disconnect was a data cable similar to a phone cord or ethernet cord that just plugged into a connector on the EMS case.

It is a data cable similar to a phone cord.

As a side note, a phone cord actually works perfectly for this. I used a standard RJ11 jack phone cord and in-line coupler to extend mine - even though the manual says otherwise.

The cord you used has 2 wires reversed and does not work by inself. However with 2 cords with a coupler the lines are reversed twice making it the equivalent of a data cord. Hence the manual is either right or wrong depending...:@
At least that is how I remember it...

[ScottG]

CA Traveler wrote:

Bobbo wrote:
I'm confused. I thought the remote display/disconnect was a data cable similar to a phone cord or ethernet cord that just plugged into a connector on the EMS case.

It is a data cable similar to a phone cord.

As a side note, a phone cord actually works perfectly for this. I used a standard RJ11 jack phone cord and in-line coupler to extend mine - even though the manual says otherwise.

[Bobbo]

CA Traveler wrote:

Bobbo wrote:
I'm confused. I thought the remote display/disconnect was a data cable similar to a phone cord or ethernet cord that just plugged into a connector on the EMS case.

It is a data cable similar to a phone cord.

Unless he has the EMS-LCHW30 which has no provision for a remote display/bypass. They do sell a remote bypass switch for the EMS-LCHW30. I bet that is what he has. He just misidentified his unit. Or, he bought the wrong remote disconnect. Maybe he bought the one for the EMS-LCHW30 when he needed the one for the EMS-HW30C. He is quoting the instructions for the remote bypass for the EMS-LCHW30.

[CA_Traveler]

Bobbo wrote:
I'm confused. I thought the remote display/disconnect was a data cable similar to a phone cord or ethernet cord that just plugged into a connector on the EMS case.

It is a data cable similar to a phone cord.

[Bobbo]

I'm confused. I thought the remote display/disconnect was a data cable similar to a phone cord or ethernet cord that just plugged into a connector on the EMS case. Or, do you actually have the EMS-LCHW30 that has the display and bypass on the unit case, itself, but no remote display/disconnect?

[CA_Traveler]

Not sure what you are trying to do. My HW50C remote display has a switch to disable the EMS. ie No detection of a power problem.