Is it safe to swap the power adapter attachment between an iBook G4 and an intel MacBook? [more inside]
posted by ndicecco on Oct 14, 2009 - 4 answers

I found a radiogram on the street. There are two short wires out the back, both stripped about 1/4" bare, and no plug. With regard to polarity, does it matter how I attach a new lead and plug? I'm in the US and will be plugging it in to 110V. [more inside]
posted by carter on Aug 14, 2009 - 12 answers

Say I have a three batteries (all 12V SLA of the same Ah capacity) wired in parallel to form a bank. I connect a dumb charging source (let's say 12V, 5A). How will the incoming charge be distributed amongst the three batteries, and what does it depend on? [more inside]
posted by gribbly on Jul 27, 2009 - 16 answers

Calling all MeFi electricians: why does my light switch make a popping noise, and will it kill me? [more inside]
posted by feathermeat on Jul 1, 2009 - 12 answers

My electric oven's bottom element looks fine, but... [more inside]
posted by Decimask on May 31, 2009 - 12 answers

When my living room lights are off, touching the screws on the faceplate for the electrical switch gives me a tiny little frisson of electricity. When my living room lights are on, I get a fairly painful shock from touching the screws on the faceplate. How dangerous is this? [more inside]
posted by jacquilynne on Nov 9, 2008 - 23 answers

I need to add grounding to an outlet. How bad an idea is it to chain the ground to the ground of another outlet that is on a different circuit a few feet up from that one? [more inside]
posted by BrotherCaine on Jul 24, 2007 - 12 answers