30 amp extension cords
I see a 50 foot 30 amp extension cord at a local store. It has 10 gauge wire. Can I safely daisy chain 2 or 3 of those?
Forum Discussion
enblethen wrote:
Two fifties and the 25 on the rig is getting pretty long especially if you are using heavy 120 volt loads like air conditioner and 120 volt water heater element. Light loads should not hurt!
Agreed.
150ft of 10 AWG has about 0.3ohm resistance. at 30 A that's about a 10V drop, so that's IMHO starting to push the limits. especially if voltage is low to start with. now add a few tenths for contac resistance. getting marginal. The other thing it is even more likely to give trouble with is starting loads for things like a AC. 50LRA now gives you 15V drop. so now your in double trouble, low voltage and high LRA trying to start a motor. NOT a good condition.
But if the loads are low not much of an issue.
