All Replies on Shop power in a rental garage

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View Spelcher's profile

Shop power in a rental garage

by Spelcher
posted 09-06-2016 07:29 PM

4 replies so far

View WhyMe's profile


1208 posts in 2171 days

#1 posted 09-06-2016 08:30 PM

If the dryer outlet is four prong then it’s 120/240V. A four wire extension cord of the correct gauge will provide both 120V and 240V out to the shop. But, and this is a big BUT, you need to have some type of overcurrent protection at the garage end to tap off 120V keeping it to a max of 20A protection for the 120V. I assume the dryer outlet is 30A.

View MrUnix's profile


7599 posts in 2808 days

#2 posted 09-06-2016 08:52 PM

Buy (or build) a temporary distribution box… basically a small breaker panel with 4-6 outlets. Wire it up with the proper sized wire/plug for your dryer outlet. The box will split out the two 120v circuits and provide overload protection for them, since 30A is more than a typical 15/20A 120v outlet can handle. As mentioned above, you have to have a 4 wire dryer outlet (2 hots + neutral + ground) for it to work.


-- Brad in FL - In Dog I trust... everything else is questionable

View Spelcher's profile


151 posts in 1461 days

#3 posted 09-09-2016 12:37 AM

Thanks guys, that’s great advice! It is indeed a 4-prong dryer outlet. Just noticed the landlord took a 120V branch off the dryer outlet box to power a baseboard heater in the laundry room. As long as I remember to turn the heater off when using the shop I would guess that wouldn’t be a problem…

Brad, I really like your idea of a temporary distribution box…

-- Jason

View runswithscissors's profile


3081 posts in 2635 days

#4 posted 09-09-2016 03:15 AM

No wonder the landlord is afraid of an inspection.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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