Yamaha 2000i's in parallel

BradTX wrote:
SoundGuy,

Now you've got me looking at surge protection and voltage regulation.

Then you may be interested in this ....

Now that I understand the main surge prevention device used in both VRs and surge protectors are MOVs that are considered to have a finite life - i.e. the more hits they take the closer they get to total failure - I've decided to revise how to best protect my own trailer's electrical system from potential failure.

The fist step in this plan is to not leave the trailer plugged in here at the house 24/7 as has been my normal practice but rather plug it in only as necessary, either when I want to use it or to ensure the battery is topped up. That way if there's a spike or surge in the incoming source it won't get to the trailer and therefore can't degrade the surge protector's MOVs.

Secondly, now that I've learned that TRC's policy is to not supply replacement parts of any kind I'm going to replace my existing 30 amp TRC Surge Guard with a 30 amp Progressive Industries EMS, the question being which one. To that end I emailed PI yesterday to ask the following questions ...

"Your EMS-HW30C and EMS-LCHW30 offer field replacement parts but does the same apply to your portable EMS-PT30C? Secondly, I can buy your surge protector here in Canada but dealers / distributors don't seem to handle these spare parts ... do I have to order them directly from Progressive and would there be any issue in shipping to a customer like myself here in Canada? Thirdly, what differences are there between the EMS-HW30C and EMS-LCHW30? Thanks!

... to which I received the following answers ...

"The PT30C is a sealed unit, so there are no customer serviceable parts. If repair is required, it must be returned to us. We deal directly with the customer, when repair is required. We would ship the parts directly to you.Parts are usually sent by US Postal Service and I know of no problem associated with that. There is no functional difference between the EMS devices. The difference between the LCHW30 and HW30 is that the the display is located inside the LCHW30, while the HW30's display is remotely located."

That confirms it - I'll go with a Progressive Industries hard wire EMS which can be field repaired later by myself should that ever become necessary, so I only need to decided which version of the two available would best suit my particular situation.

Thirdly, since all these VRs contain some number of MOVs and I know MOVs by their nature are prone to eventually fail it seems to me it's rather pointless to invest $500 in a VR, only to have it die later and not be repairable because I can't get the parts. As such, I've decided to just forget about using a VR and if the EMS shuts down power then I'll simply unplug and wait it out, just as we've done in the past. We've dry camped many times before so although occasionally doing so when the incoming power source isn't suitable may be an inconvenience that's all it is, an inconvenience - and not worth the aggravation involved in owning a piece of electronic equipment, in this case a VR, that can't be repaired because I can't get parts for it. :M