American Cinematographer - March 1990 - 14
Q# Is there a formula by
*
which I can determine
how many lighting fixtures, and
of what size, I can plug into an
electrical outlet without fear of
blowing fuses or breakers?
A# Yes,commit
and it's this
a good idea
*
to
one
to
memory, particularly if you're
doing any location lighting work:
watts
=
amps
volts
For example, a 1,000 watt
operating at 120 volts
draws 8.33 amps. (1,000 divided
by 120 equals 8.33.) Two 1,000
watt sources, drawing a total of
16.66 amps, could therefore be
operated from a typical 20 amp
source
line without fear of blowing a
fuse or breaker (again, assuming
a 120 volt line source).
While on the subject, a
pre-shoot survey of a location is
not complete without a thorough
^dedolight
A
Revolutionary Optical System
-
examination of the electrical
supply. If a room has five duplex
Surpasses Fresnel Technology
Innovative optical system design (pat. pend.) and precision manufac¬
turing define a new level of performance. A light output comparable
to conventional fixtures of much higher wattage. Economical 100, 50
and 20 watt 12 volt lamps are available - rugged and long-lasting.
Power by battery - camera or car (cigarette lighter). Or
use the AC contol unit, which can power up to four
lights, with accurate setting of the color temper¬
ature to 3000°, 3200° or 3400° Kelvin.
outlets, do not assume that it has
separate 15 or 20 amp breaker
for each one. More often, they
a
have been
spaced for
hooked up to a single line,
and the same line may be power¬
are
ing the overhead lights. Locate
the fuse
or
breaker box, and, if
practical, turn off each
succession to
-
Small size. Lots of
Lots of
-
-
-
tough.
even on
extraordinary focus range.
Really wide. 25 to 1 wide.
Canada
Denmark
France
Great Britain
Italy
Netherlands
Scandinavia
Spain
Switzerland
one
on
in
each
other floors. Examine the
receptacles for ground pins
(adaptors may be necessary).
Check switches to see if they
control any of the wall outlets.
edge to edge.
Soprofilm, 6 Av. G. Rodenbach, B-1030 Bruxelles
Cinequip, 10 Banigan Drive, Toronto Ont. M4H 1E9
Lome Lapham, 206-1099 West 8th Ave., Vancouver B.C. V6H 1C3
Macphon No. 2-2616 16th St. N.E., Calgary Abta. T2E 7J8
Poul Zimmermann, Borgergade 16, DK-1300 Copenhagen
Dimaphot, 16 Rue Clement-Marot, F-75008 Paris
what's
wall
A dream has come true.
Belgium
see
line. Keep in mind that each may
be feeding power to other rooms,
light.
An
A flat field. From
conven¬
ience, and in some occasions ALL
tel.
tel.
tel.
tel.
tel.
tel.
Telefex, 58 Kew Road, Richmond Surrey TW9 2PQ
De Sisti, via di Torrenova 257, 1-00133 Roma
tel.
Compact Light, Wenckebachweg 81, NL-1096 AL Amsterdam
Rune Ericson, Fluvudstagatan 12, S-17158 Solna
tel.
Rosco Espana, Pilar de Zaragoza 37, E-28028 Madrid
Bolex, 15 Route de Lausanne, CH-1401 Yverdon
tel.
(0)2-2425928
(416) 467-7700
(604) 738-5200
(403) 250-1719
(0)1-939750
(0)1-47.23.98.87
(0)1 19401155
tel. (0)6 6143500
tel.
tel.
(0)20-935807
(0)8-7340845
Make your examination as thor¬
ough as possible-it'll save you
hours of agony later.
Please send
questions to: American
Cinematographer, c/o Ask ASC, PO
Box 2230, Hollywood, CA 90078.
(0)1-24611 02
(0)24-216021
DEDOTEC USA INC.
DEDO WEIGERT
FILM GMBH
210 Westlake Drive
5, RottmannstraBe
Valhalla, NY 10595
D-8000 Munich 2
Tel.:
(914) 761-5608
West
FAX:
(914) 761-9501
Tel.:
Germany
(89) 525064
Tlx.: 529865
FAX
(89) 5291 73
v
American Cinematographer - March 1990
Table of Contents for the Digital Edition of American Cinematographer - March 1990
American Cinematographer - March 1990 - 1
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