My first series of questions is about ventilation. I have been told that fibreglass chemicals etc. vapour downward (evident from automotive paint-booth-style ventilation designs) so I am installing an output vent near the floor on the side wall. Any advice on the configuration, and what things I need to consider at what stages of construction?
Should the fan blower motor be a sealed motor, or is this not necessary (I would like to be cautious in this area so I will most likely err on the side of caution with a sealed motor‚Ä¶).
What about the type of filter, and placement of the filter? What about the nature of the output on the outside ducting? any special configurations or conditions?
How often would I need to completely refresh the air in the garage? For instance, a 900 CFM fan is theoretically capable of bringing in 5000ft3 of fresh air every 5.5 minutes. I would leave the garage door open slightly at the bottom to allow air in. However, I am in Canada and plan to work in the winter. A strong fan might keep me a little too cold. Should I compare the fresh air turnover to the volume-warming capabilities of my heater? For instance, if my radiant heater can bring 5000ft3 of air from 30 degrees F to 70 F in 15 minutes, should I look for an exhaust fan that takes at least this much time to refresh the same area? or should the turn over be twice the heater‚Äôs capabilities (e.g. 30 minutes total turnover against 30 minutes total warming)?
The last series of questions I have is about electrical service. What do other people have in voltage and amp service? I am working essentially on my own, and sometimes with the help of another person. The only things I can imagine running at the same time would be
1) lighting (fixtures as well as hand-held/plug-in)
2) fan mentioned above
3) an electrical space heater @ 1500-2000W (if I opt out of the radiant gas heater)
4) a modest air compressor (amperage/wattage unknown at this point, maybe you can suggest)
5) a heat gun at 1000-1500W
6) some other misc. hand tool such as a saw or drill, assuming there is someone else working in the shop with me.
What electrical configuration is needed to support this? I am not doing the construction but I would like be informed so I can discuss it with the contractor.
Thank you in advance!