Ideally, a fridge in residential unit is on its own 20A circuit meaning a 20A breaker and a single run of 12 gauge conductors to the receptacle for the fridge.

You can also find syndicators on the podcast circuit.

You must be ready to increase you gas pipe by one size,,,if your running 3/4" black pipe get ready to increase to 1".You must run a dedicated 120 volt circuit to the unit.You must ready ready for maintenance ie flushing out the unit with a mild acid solution every 4 to 6 months,,,,If you can handle that,,,,,,the good news is ,,you now have a water heater that will last and last a long time without replacement ,,,,,if youll do the maintenance,,,,no more leaky tanks,,,,,,if your unit fails its usaully an inexpensive electronic component problem ,,easy to change out ,,,,OK gang ,,Im off my soapbox,,,,Best of luck in 2014Dave DoyleLos Angeles

There are also newer circuit breakers in each apartment and three-prong and gfci outlets have been installed where required.  

Dear BP,We are in the process of researching an electrical upgrade for a 1950 apartment building with 8 one bedrooms and 2 studios, taking into account the following:We have no dishwashers or garbage disposals and won't install any,Stoves, ovens and heaters are gas,We are in Southern California,In one bedrooms: 10,000 BTU a/c for living room and 6,000 BTU for bedroom,Central water heater is gas,We'd like 2 electric vehicle chargers connected to house circuit (currently only has LED lights on it),We have no washers/dryers currently but might get one of each or a pair in the future,Our insurance company states each unit should have 150 amps.How many amps should we put in the main breaker?  

Hello,We have an original fused disconnect from 1950, when the building was built but all of the apartments have circuit breakers.  

So with the new set of Guru's its reality show then hit the Training circuit and once your in the guru training circuit your going to make 5 to 10 million a year net..

We can install laminate, swap a faucet or toilet, wire plugs and change out an old 230v a/c to a 115 circuit in no time. 

@Jeremy Willis this sounds like the typical seminar funnel circuit designed to get you in at a low price and only give you enough info to get you to purchase the next level of whatever they tell you you need.

Updating that would be significantly more costly than say a home from 15 years ago that has the wire you need but code requiring that it needs to be updated to say gfi's/afci breakers.